I am a certified natural health consultant and my favorite book on Herbalism and healing w/ Teas is "20,000 Secrets of Tea" by Victoria Zak.
I think that when you start doing your own research into natural healing you will find that it encompasses a broad spectrum of topics--embracing a holistic view of healing--including diet, exercise, meditation, affirmations, herbalism, etc.. You may just turn around (3) times and realize that you have stumbled upon Pagan Teachers and Healers--without even trying!
Peace and Love on your path to Total Healing...
Blessed be...